<?php

class UserController extends Controller
{
	/**
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 * using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout='//layouts/column2';

	/**
	 * @return array action filters
	 */
	public function filters()
	{
		return array(
			'accessControl', // perform access control for CRUD operations
			'postOnly + delete', // we only allow deletion via POST request
		);
	}

	public function actionRegister(){
		$user=Yii::app()->user;
		$data=$user->getFlash('data');
		$this->render('register',$data);
	}

	public function actionLogin(){
		$user=Yii::app()->user;
		$data=$user->getFlash('data');
		$this->render('login',$data);
	}

	public function actionDoLogin(){
		$username = Yii::app()->request->getParam('username');
		$password = Yii::app()->request->getParam('password');
		$identity = new UserIdentity($username,$password);
		$identity->authenticate();
		switch ($identity->errorCode) {
			case UserIdentity::ERROR_NONE:
				Yii::app()->session['id']=$identity->getId();
				Yii::app()->session['username']=$username;
				$this->redirect($this->createUrl('article/index'));
				break;
			case UserIdentity::ERROR_USERNAME_INVALID:
				$data = array(
					'msg'=>'用户名不正确',
				);
				$user = Yii::app()->user;
                $user->setFlash('data', $data);
                $this->redirect($this->createUrl('user/login'));
            case UserIdentity::ERROR_PASSWORD_INVALID:
            	$data=array(
            		'msg'=>'请填写密码',
            		'username'=>$username,
            	);
            	$user=Yii::app()->user;
            	$user->setFlash('data',$data);
            	$this->redirect($this->createUrl('user/login'));
            case UserIdentity::ERROR_PASSWORD_WRONG:
            	$data=array(
            		'msg'=>'密码不正确',
            		'username'=>$username,
            	);
            	$user=Yii::app()->user;
            	$user->setFlash('data',$data);
            	$this->redirect($this->createURL('user/login'));
			default:
				# code...
				break;
		}
	}

	public function actionLogout(){
		Yii::app()->session->clear();
		Yii::app()->session->destroy();
		$this->redirect($this->createUrl('user/login'));
	}

	public function actionDoRegister(){
		$username=Yii::app()->request->getParam('username');
		$password=Yii::app()->request->getParam('password');
		$identity=new UserIdentity($username,$password);
		$identity->check();
		switch ($identity->errorCode) {
			case UserIdentity::ERROR_USERNAME_INVALID:
				$data=array(
					'msg'=>'请填写用户名',
				);
				$user=Yii::app()->user;
				$user->setFlash('data',$data);
				$this->redirect($this->createUrl('user/register'));
				break;
			case UserIdentity::ERROR_USERNAME_HAS:
				$data=array(
					'msg'=>'用户已存在',
					'username'=>$username,
				);
				$user=Yii::app()->user;
				$user->setFlash('data',$data);
				$this->redirect($this->createUrl('user/register'));
			case UserIdentity::ERROR_PASSWORD_INVALID:
				$data=array(
					'msg'=>'请填写密码',
					'username'=>$username,
				);
				$user=Yii::app()->user;
				$user->setFlash('data',$data);
				$this->redirect('user/register');
			default:
				$model=new User;
				$model->username=$username;
				$model->password=$password;
				$x = $model->save();
				if($x){
					$data=array(
						'msg'=>'注册成功，请登录',
						'username'=>$username,
					);
					$user=Yii::app()->user;
					$user->setFlash('data',$data);
					$this->redirect($this->createUrl('user/login'));
				}
				break;
		}
	}

	public function actionView($id)
	{
		$this->render('view',array(
			'model'=>$this->loadModel($id),
		));
	}

	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate()
	{
		$model=new User;

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['User']))
		{
			$model->attributes=$_POST['User'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('create',array(
			'model'=>$model,
		));
	}

	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 * @param integer $id the ID of the model to be updated
	 */
	public function actionUpdate($id)
	{
		$model=$this->loadModel($id);

		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);

		if(isset($_POST['User']))
		{
			$model->attributes=$_POST['User'];
			if($model->save())
				$this->redirect(array('view','id'=>$model->id));
		}

		$this->render('update',array(
			'model'=>$model,
		));
	}

	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 * @param integer $id the ID of the model to be deleted
	 */
	public function actionDelete($id)
	{
		$this->loadModel($id)->delete();

		// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
		if(!isset($_GET['ajax']))
			$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
	}

	/**
	 * Lists all models.
	 */
	public function actionIndex()
	{
		$dataProvider=new CActiveDataProvider('User');
		$this->render('index',array(
			'dataProvider'=>$dataProvider,
		));
	}

	/**
	 * Manages all models.
	 */
	public function actionAdmin()
	{
		$model=new User('search');
		$model->unsetAttributes();  // clear any default values
		if(isset($_GET['User']))
			$model->attributes=$_GET['User'];

		$this->render('admin',array(
			'model'=>$model,
		));
	}

	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 * @param integer $id the ID of the model to be loaded
	 * @return User the loaded model
	 * @throws CHttpException
	 */
	public function loadModel($id)
	{
		$model=User::model()->findByPk($id);
		if($model===null)
			throw new CHttpException(404,'The requested page does not exist.');
		return $model;
	}

	/**
	 * Performs the AJAX validation.
	 * @param User $model the model to be validated
	 */
	protected function performAjaxValidation($model)
	{
		if(isset($_POST['ajax']) && $_POST['ajax']==='user-form')
		{
			echo CActiveForm::validate($model);
			Yii::app()->end();
		}
	}
}
